Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1960 0 0:00
1961 0 0:00
1962 0 0:00
1963 0 0:00
1964 0 0:00
1965 0 0:00
1966 0 0:00
1967 0 0:00
1968 0 0:00
1969 0 0:00
1970 0 0:00
1971 0 0:00
1972 0 0:00
1973 0 0:00
1974 0 0:00
1975 0 0:00
1976 0 0:00
1977 1 791:25
1978 1 820:52
1979 0 934:10
1980 2 731:36
1981 0 944:01
1982 4 768:05
1983 1 673:25
1984 0 682:07
1985 4 775:03
1986 5 933:53
1987 6 1120:12
1988 11 1184:32
1989 3 1293:12
1990 3 944:40
1991 5 858:50
1992 0 759:26
1993 1 827:13
1994 5 1135:36
1995 3 1315:15
1996 5 1503:39
1997 0 1460:20
1998 1 1162:42
1999 4 1225:50
2000 2 1031:40
2001 2 1273:17
2002 3 1125:31
2003 6 1253:15
2004 8 1065:05
2005 12 1106:54
2006 35 964:46
2007 13 1081:59
2008 69 1099:59
2009 13 1282:49
2010 31 1288:05
2011 18 1234:15
2012 41 1364:55
2013 26 1352:29
2014 47 1299:50
2015 37 1223:30
2016 40 1409:54
2017 65 524:40
2018 116 1539:51
2019 54 1131:19
2020 65 1214:00
2021 16 1406:20
 
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